Minimum description length is a way of finding the best mathematical explanation for something. It works by comparing different explanations to find which one best describes the data or problem you have. To do this, it looks at the length of the explanation and the accuracy or precision of the results it produces. The best explanation is the one that takes the least amount of words (or description) to explain the problem accurately. Imagine that you and your friends are trying to figure out how to build a birdhouse. You could each come up with your own designs, but the one with the shortest description of how to build it is probably the best one.